. >>> and tom cruise and katie holmes, they're the latest celebrity couple to call it quits. they join a long list, though, of famous twosomes to go their separate ways. it is a very important topic. we're going to look at why hollywood couples cannot seem to stay together. i say it sarcastically, but they don't. >> as someone said to me, they say it would never last and it didn't. so -- >> and it didn't. >> it has been nearly a year since casey anthony was acquitted on charges she killed her daughter. coming up this morning, we're going to look at her life since then. >>> but we begin this morning with this record shattering heat wave. the weather channel's mike sidle is in washington, d.c. this morning. good morning to you. >> good morning, peter. that giant wind storm on friday night knocked down thousands of trees and one of those is on this street in northwest washington. this is about as big as they come. a huge old oak tree. and look at the size of the root ball, about 12 feet tall, taking out the sidewalk and as the tree came down, it knocked out transformers, the pow